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Question
The mean of first 7 odd natural numbers is ______.
Options
5
7
8
10
MCQ
Fill in the Blanks
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Solution
The mean of first 7 odd natural numbers is 7.
Explanation:
The first 7 odd natural numbers are 1, 3, 5, 7, 9, 11, 13.
Their sum is 49 and the mean = 49 ÷ 7 = 7.
Equivalently, for any evenly spaced list the mean equals
= `("First" + "Last")/2`
= `(1 + 13)/2`
= 7, which is also the middle term.
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